As previously explained by Pagero, this is not the first time that SAT has been moving the deadlines for issuing the new version of CFDI. With the new timeline, taxpayers will be able to use CFDI 3.3 for all documents until 31 March 2023.   Besides this announcement, SAT has also decided to grant a grace period to taxpayers obliged to issue the Carta Porte complement. The penalties for non-compliance with Carta Porte will begin to be imposed from August 2023.   More details about the announcement by SAT can be found here (in Spanish).